Product Overview

Imperial / Inch Tapered Bearings are standardized precision tapered roller bearings manufactured according to North American inch-system dimensions (ANSI/ABMA standards). Designed to accommodate high combined radial loads and heavy unidirectional axial thrust forces, these bearings consist of an inner ring assembly with rollers and cage (Cone) and a separate outer ring (Cup). Precision-ground from high-purity GCr15 Chrome Steel or premium case-carburized alloy steel, inch-series tapered bearings feature logarithmic raceway profiles that eliminate edge stress and deliver true rolling motion. They are widely specified across American-brand heavy trucks, automotive axles, agricultural machinery, oilfield equipment, industrial gearboxes, and construction machinery.

Key Features & Advantages

Imperial Standard Compatibility: Manufactured to strict ANSI/ABMA inch-system dimensional specifications, ensuring exact direct-fit replacement for North American equipment and vehicle machinery.

Separable Cone & Cup Construction: The independent Cup and Cone assembly allows individual mounting, simplifying shaft assembly, housing alignment checks, and routine operational maintenance.

Exceptional Combined Load Performance: Tapered geometry handles simultaneous heavy radial forces and substantial single-direction axial thrust under demanding dynamic conditions.

Customizable Preload & Operational Clearance: Internal clearance can be precisely set using shims or adjustment locknuts during mounting to achieve maximum system stiffness and rotational precision.

Case-Hardened Steel Options: Offered in premium carburized steel to provide a tough, shock-resistant core beneath a hardened outer raceway, preventing dynamic impact failures.

Model No. (Cone / Cup)	Bore (d) [inch / mm]	Outer Dia (D) [inch / mm]	Total Width (T) [inch / mm]	Series / Duty Rating	Dynamic Load (Cr) [kN]
LM 11749 / LM 11710	0.6875" (17.462 mm)	1.5700" (39.878 mm)	0.5400" (13.716 mm)	Light-Medium	23.5
LM 11949 / LM 11910	0.7500" (19.050 mm)	1.7810" (45.237 mm)	0.6100" (15.494 mm)	Light-Medium	28
M 12649 / M 12610	0.8437" (21.430 mm)	1.9800" (50.292 mm)	0.6900" (17.526 mm)	Medium	36.5
L 44649 / L 44610	1.0625" (26.988 mm)	1.9800" (50.292 mm)	0.5600" (14.224 mm)	Light	34
LM 67048 / LM 67010	1.2500" (31.750 mm)	2.3280" (59.131 mm)	0.6250" (15.875 mm)	Light-Medium	44
SET 4 (L 68149 / L 68110)	1.3775" (34.988 mm)	2.3612" (59.974 mm)	0.6250" (15.875 mm)	Light	42.5
JL 69349 / JL 69310	1.5000" (38.100 mm)	2.4803" (63.000 mm)	0.6693" (17.000 mm)	Light	46.5
15100 / 15245	1.0000" (25.400 mm)	2.4409" (62.000 mm)	0.8125" (20.638 mm)	Standard Imperial	55
25580 / 25520	1.7500" (44.450 mm)	3.2650" (82.931 mm)	0.9375" (23.812 mm)	Standard Imperial	82

FACTORY WORKSHOP

We continually invest in research and development to enhance our product offerings and manufacturing processes. Our goal is to maintain our position as a leader in the industry while embracing new technologies and trends that shape the future of metal production.

Factory workshop

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With a strong export network, Shandong Lu Tisco Stainless Steel Co., Ltd. serves clients across the globe. Our dedicated customer service team ensures that every client receives personalized attention, timely deliveries, and support throughout the product lifecycle.

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Imperial Inch Tapered Bearings